A directory named 'data_backup' contains multiple files and subdirectories. How would an administrator remove the entire directory and its contents without being prompted for each file or directory?
rmdir data_backup
rm -i data_backup
rm -rf data_backup
rm data_backup
The correct answer is rm -rf data_backup. The -r option stands for 'recursive' and is necessary to delete directories and their contents. The -f option stands for 'force', which prevents the command from prompting for confirmation. This combination is powerful and should be used with caution to avoid accidental data loss. rm data_backup is not correct because it will only work on individual files and will fail on directories. rmdir data_backup only removes empty directories, and rm -i data_backup will prompt for confirmation, which we want to avoid based on the question.
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